Convert energy and power units easily.
Result: -
Energy powers everything — from the food we eat to the machines we operate. Power measures how fast that energy is used. But different industries, regions, and devices use different unit systems. Whether you're calculating engine power, electrical load, food energy, or industrial output — knowing how to convert energy and power units is essential.
The Free Energy/Power Converter by AlllinTools provides fast and highly accurate conversions between global standard energy units, such as:
Joules (J)
Calories (cal)
Kilowatt-hour (kWh)
Watt (W)
Kilowatt (kW)
Horsepower (HP)
BTU (British Thermal Unit)
This tool is engineered for professionals — but simple enough for anyone to use.
Enter → Convert → Understand
Instant clarity for science, engineering, fitness & industry.
Energy consumption influences:
Incorrect conversions can cause:
Accurate conversion → smarter energy usage → cost savings + safety
| Concept | Unit | Meaning | Everyday Example |
|---|---|---|---|
| Energy | Joules, Calories, kWh | Total work done | Battery capacity, food |
| Power | Watts, HP | Rate of energy usage | Bulb brightness, engine strength |
Example:
A 1000W appliance running for 1 hour consumes:
1 kWh of energy
Power = Speed of energy consumption
Energy = Quantity stored or consumed
| Category | Units | Applications |
|---|---|---|
| Energy | Joule (J), calorie (cal), BTU, kWh | Fuel, batteries, heating, food |
| Power | Watt (W), kilowatt (kW), HP | Machinery, motors, appliances |
The AlllinTools converter supports converting:
Energy ↔ Energy
Power ↔ Power
Power ↔ Energy (time-based calculation where relevant)
Global compatibility built in.
📌 Power Conversions
1 HP = 745.7 W
1 kW = 1000 W
📌 Energy Conversions
1 kWh = 3.6 million Joules (3.6 × 10^6 J)
1 calorie = 4.184 Joules
1 BTU = 1055.06 Joules
Example:
Energy usage: 2 kWh
→ 7.2 million Joules
🏠 Home Appliances & Electricity Bills
AC power: 1.5 kW
Usage: 4 hours/day
Energy consumption → 6 kWh
→ tool converts to Joules or BTU for comparison
🚗 Automobiles & Engines
Car engine rated: 150 HP
→ Convert to 111.85 kW for global understanding
🔋 Batteries & Gadgets
Laptop battery: 60 Wh
→ Converted into both Joules & kWh to measure usage time
💪 Fitness & Food Tracking
Food label: 500 kcal per meal
→ Convert to joules used by the body daily
🌡️ HVAC Systems
Heater output: 8000 BTU
→ Convert to 2.34 kW — compare with electrical appliances
Unit Input — Converted Output
1 HP — 745.7 W
1 BTU — 1055.06 J
1 kWh — 860 kcal
1 cal — 4.184 J
1 W — 0.001 kW
Your values remain yours:
🔐 No tracking
🚫 No stored inputs
🛑 No account required
✔ Totally secure for research & company data
Energy drives the world. Power determines speed and performance. The Free Energy/Power Converter by AlllinTools gives you the knowledge to understand and compare energy usage everywhere — from home utilities to industrial machines.
Use this tool to:
Smart conversions → Smart living → Smart future
⚡ Convert energy & power units instantly:
✨ Energy Unit Tool – Only on AlllinTools.com